My son's Mario/Luigi Dream Team 3DS XL has been doing this for a while now. I'm at a loss for what could be going on.
The main menu goes NUTS when I turn it on. It's like the left, up, and down buttons are all registering and that's causing constant scrolling on the main menu.
When I start a game, the main game menu does similar things.
Once I actually select a save file or start a new game, everything seems fine and it plays okay without having any issues.
Anyone else seen this before?